• Versions: node@v20.12.0, linux@6.5.0-35-generic
• nodemon -v: 3.1.3
• Operating system/terminal environment (powershell, gitshell, etc): bash
• Using Docker? What image: no
• Command you ran: APP_ENV=local npx nodemon index.js

Expected behaviour

Runtime environment variables expected to override the env defined in config.

Actual behaviour

Envs defined in config.env are always be set.
Seeing dotenv etc. this is not the expected behavior.

Steps to reproduce

1. make files
   nodemon.json

   {
     "env": {
       "APP_ENV": "development"
     }
   }

   index.js

   console.log(process.env.APP_ENV)
   

2. run nodemon with env variable

   APP_ENV=local npx nodemon index.js
   

3. see the output (ideally "local")

   development
   

If applicable, please append the --dump flag on your command and include the output here ensuring to remove any sensitive/personal details or tokens.